JPH0759869B2 - Fire escape door - Google Patents

Fire escape door

Info

Publication number
JPH0759869B2
JPH0759869B2 JP61042185A JP4218586A JPH0759869B2 JP H0759869 B2 JPH0759869 B2 JP H0759869B2 JP 61042185 A JP61042185 A JP 61042185A JP 4218586 A JP4218586 A JP 4218586A JP H0759869 B2 JPH0759869 B2 JP H0759869B2
Authority
JP
Japan
Prior art keywords
door
subdoor
rollers
suspension
force
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP61042185A
Other languages
Japanese (ja)
Other versions
JPS62202190A (en
Inventor
忠兵衛 西村
和昭 小川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ryobi Ltd
Original Assignee
Ryobi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ryobi Ltd filed Critical Ryobi Ltd
Priority to JP61042185A priority Critical patent/JPH0759869B2/en
Publication of JPS62202190A publication Critical patent/JPS62202190A/en
Publication of JPH0759869B2 publication Critical patent/JPH0759869B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は潜戸およびそれを装着する親扉からなる防火避
難扉に関する。
Description: TECHNICAL FIELD The present invention relates to a fireproof evacuation door including a latent door and a main door for mounting the same.

(従来の技術) 従来、建物内に備えられる防火避難扉は、扉の表面が3
m2以下のものでは潜戸のない単一の扉として構成される
が、表面が3m2以上のものでは潜戸を付けるようになっ
ている。その潜戸はその一方の側縁でオートヒンジ等に
より親扉に枢止された。なお、多くの場合、防火避難扉
が備えられる建物には排煙機が設置され、火災が発生す
ると排煙機を作動して煙を排出するようになっている。
(Prior Art) Conventionally, a fire escape door provided in a building has a surface of 3
If it is less than m 2 , it is constructed as a single door without a subdoor, but if the surface is 3 m 2 or more, it is designed to have a subdoor. The subdoor was pivotally attached to the parent door at one side edge by an auto hinge or the like. In many cases, a smoke evacuator is installed in a building equipped with a fireproof evacuation door, and when a fire occurs, the smoke evacuator operates to discharge smoke.

(発明が解決しようとする問題点) 火災等の発生により排煙機が作動すると、防火避難扉を
境に気圧差が生じる。とくに現在の建物は気密度が高い
ため煙を吸い出すには吸気口まわりの風速は10m/sec以
上となり、扉を境に大きな気圧差を生じる。従来の構造
ではそのような気圧差の影響を強く受け、そのため潜戸
の開放を困難にし、場合によっては開かなくなるので、
安全対策上、大きな問題点となっていた。
(Problems to be Solved by the Invention) When a smoke evacuator operates due to a fire or the like, a pressure difference occurs across a fireproof evacuation door. In particular, since the current building has a high airtightness, the wind speed around the intake port becomes 10 m / sec or more to suck out smoke, which causes a large pressure difference across the door. In the conventional structure, it is strongly affected by such a pressure difference, which makes it difficult to open the subdoor, and in some cases it does not open,
It was a big problem in terms of safety measures.

本発明の目的は上記従来技術の問題点を解消することで
あって、それ故、潜戸をわずかな力で開放し得ると共
に、避難時の有効幅を充分にとれるようにし、従って容
易に避難でき且つ好適に開閉する防火避難扉を提供する
ことである。
An object of the present invention is to eliminate the above-mentioned problems of the prior art. Therefore, it is possible to open the sub-door with a slight force, and to have a sufficient effective width at the time of evacuation, so that it is possible to easily evacuate. And it is to provide a fireproof evacuation door that can be opened and closed appropriately.

(問題点を解決するための手段) 本発明による防火避難扉を特徴づける構成は、親扉
(2)および前記親扉に備えられた潜戸(3)からなる
防火避難扉において、前記潜戸は上下一対の吊りアーム
(14)(15)によって前記親扉に装着され、前記一対の
吊りアームは一端が前記潜戸の吊り側における前記親扉
の部分に枢止され且つ他端が前記潜戸の吊り側から離れ
た前記潜戸の該吊り側に近い位置に枢止され、その潜戸
にはその縦方向の中心線に近い位置の上下に在ってそれ
ぞれ親扉側のガイドレールに係合するカイドローラ
(8)、(9)が備えられ、上部または下部の一方の前
記ガイドローラは2つのローラからなり、さらに前記2
つのローラ間においてそれらのローラの支持部材に固定
されたギヤ(18)と、そのギヤにかみ合い且つ潜戸に可
動に設置されたラック(19)と、そのラックに連結され
たピストン(20)を有する油圧装置(21)と、そのピス
トンに戻る力を加えるばね(22)が備えられていること
である。
(Means for Solving the Problems) A feature of the fireproof escape door according to the present invention is a fireproof escape door including a main door (2) and a subdoor (3) provided in the main door. The pair of suspension arms (14) and (15) are attached to the parent door, one end of the pair of suspension arms is pivotally fixed to the portion of the parent door on the suspension side of the subdoor and the other end is the suspension side of the subdoor. A guide roller (8) that is pivotally fixed to a position close to the hanging side of the sub-door away from the sub-door, and that is above and below a position near the vertical centerline of the sub-door and that engages with the guide rails on the parent door side. ), (9), the guide roller on either the upper or lower side comprises two rollers, and
It has a gear (18) fixed between the two rollers and a supporting member for the rollers, a rack (19) engaged with the gear and movably installed in the sub-door, and a piston (20) connected to the rack. A hydraulic device (21) and a spring (22) for applying a returning force to the piston are provided.

(問題点を解決するための手段の作用) この防火避難扉では、排煙機の作動により扉に負圧が作
用しても、支点の役割を果す上下のガイドローラ
(8)、(9)が中心の近くに在るので、その負圧によ
る開放力と閉鎖力が相殺するため僅かな力で開放するこ
とができる。潜戸が開くと、吊りアーム(14)、(15)
で拘束されながら回動し吊り側に移動するので、避難す
るのに充分な有効幅を容易に確保できる。そして、潜戸
(3)が回動すると、それと共にギヤ(18)も回動する
のでラック(19)と共にピストン(20)をばね(22)の
弾力に抗して変位する。従って、潜戸を解放するとばね
(22)の弾力で潜戸は自づと閉じ、また油圧の作用によ
り急激な開閉は阻止される。
(Operation of Means for Solving Problems) In this fireproof evacuation door, upper and lower guide rollers (8) and (9) which play a role of a fulcrum even if negative pressure acts on the door by the operation of the smoke evacuator. Is close to the center, the opening force and the closing force due to the negative pressure cancel each other out, so that it can be opened with a slight force. When the subdoor opens, the suspension arms (14), (15)
Since it rotates and moves to the suspension side while being restrained by, it is possible to easily secure an effective width sufficient for evacuation. Then, when the subdoor (3) rotates, the gear (18) also rotates together with it, so that the piston (20) is displaced together with the rack (19) against the elastic force of the spring (22). Therefore, when the sub-door is released, the sub-door is automatically closed by the elastic force of the spring (22), and abrupt opening and closing is prevented by the action of hydraulic pressure.

(実施例) 次に図面を参照のもとに本発明の実施例について説明す
る。第1図、第4図および第5図は本発明の一例による
防火避難扉の全体を示すものであって、図示のように、
この防火避難扉(1)は親扉(2)とその適当な位置に
開閉自在に装着される潜戸(3)から構成される。
(4)は親扉の取手であり、(5)は潜戸の取手であ
る。取手(5)とは反対側の潜戸(2)の側が吊り側に
なっており、そこに近接した親扉の側に吊軸(6)が回
動自在に、垂直に設置されている。なお、親扉(2)と
潜戸(3)の間には戸じゃくり(7)が取付けられ、閉
鎖時に直接火が通らないようになっている。
(Example) Next, the Example of this invention is described with reference to drawings. FIG. 1, FIG. 4 and FIG. 5 show the entire fire protection evacuation door according to an example of the present invention.
This fireproof evacuation door (1) is composed of a parent door (2) and a subdoor (3) which is openably and closably mounted at an appropriate position.
(4) is a parent door handle, and (5) is a subdoor handle. The side of the subdoor (2) opposite to the handle (5) is the suspension side, and the suspension shaft (6) is rotatably and vertically installed on the side of the parent door adjacent thereto. A door squirrel (7) is attached between the main door (2) and the subdoor (3) so that the fire does not directly pass when the door is closed.

潜戸(3)には、第2図に示すように、潜戸(3)の中
心線上もしくはその近接位置の上下にガイドローラ
(8)、(9)が備えられる。第6図および第7図に示
すように、それらのガイドローラはそれに対応する親扉
(2)の位置に取付けられたガイドレール(10)、(1
1)にかん合し、ガイドレールに沿って移動し得るよう
になっている。第6図は上部のガイドローラ(8)が上
側のガイドレール(10)にかん合した状態を示す。ま
た、第7図に示すように、下部のガイドローラ(9)も
下側のガイドレール(11)の凹溝内にかん合する。以下
に記載するように、潜戸(3)に自閉力を与え且つその
開閉速度を抑えるため一方のガイドローラ、例えば第2
図に示すように上側のガイドローラ(8)は一対のロー
ラ(8a)、(8b)からなる。それらローラ間の軸(8c)
が下部のガイドローラ(9)と上下に整合する。
As shown in FIG. 2, the subdoor (3) is provided with guide rollers (8) and (9) above and below the centerline of the subdoor (3) or in the vicinity thereof. As shown in FIGS. 6 and 7, the guide rollers are attached to the corresponding guide rails (10), (1
It fits to 1) and can move along the guide rail. FIG. 6 shows a state in which the upper guide roller (8) is engaged with the upper guide rail (10). Further, as shown in FIG. 7, the lower guide roller (9) also fits in the groove of the lower guide rail (11). As described below, one guide roller, such as the second
As shown in the figure, the upper guide roller (8) is composed of a pair of rollers (8a) and (8b). Axis between those rollers (8c)
Align vertically with the lower guide roller (9).

吊軸(6)は親扉(2)に回動自在に備えられるため、
第8図に示すように、上下の端部に軸受(12)、(13)
が取付けられ、それらの軸受は親扉に固定される。ま
た、吊軸(6)の上下端、即ち軸受(12)、(13)の近
くには潜戸(3)を支持する吊りアーム(14)、(15)
の一端が固定され、各吊りアームの他端には軸受(1
6)、(17)が取付けられている。それらの吊りアーム
の軸受(16)、(17)はそれぞれ潜戸(3)の上下にお
ける吊り側に近い位置に設置され、それによって各吊り
アーム(14)、(15)の潜戸(3)に枢止される。従っ
て、各吊りアーム(14)、(15)は一端は吊軸(6)を
介して親扉(2)に且つ他端は軸受(16)、(17)によ
り潜戸(3)にそれぞれ回動自在に取付けられる。
Since the suspension shaft (6) is rotatably provided on the parent door (2),
As shown in FIG. 8, bearings (12) and (13) are provided at the upper and lower ends.
Are mounted and their bearings are fixed to the main door. Also, suspension arms (14), (15) supporting the subdoor (3) are provided near the upper and lower ends of the suspension shaft (6), that is, near the bearings (12), (13).
One end of each suspension arm is fixed and the other end of each suspension arm has a bearing (1
6) and (17) are attached. The bearings (16) and (17) of those suspension arms are installed near the upper and lower sides of the subdoor (3), respectively, so that the bearings (16) and (17) are pivoted to the subdoors (3) of the suspension arms (14) and (15). Be stopped. Therefore, one end of each suspension arm (14), (15) rotates to the parent door (2) via the suspension shaft (6) and the other end rotates to the sub-door (3) by the bearings (16) and (17), respectively. Can be installed freely.

従って、潜戸(3)を開くと、上下の吊りアーム(1
4)、(15)で拘束されながら、潜戸(3)は上部の軸
(8c)と下部のガイドローラ(9)を中心に回動しなが
ら吊り側に移動し、その際、各吊アームは第9図に矢印
(B)で示すように、吊軸(6)を中心に回動し、最も
開いた状態では潜戸(3)は親扉(2)に垂直になる。
Therefore, when the subdoor (3) is opened, the upper and lower suspension arms (1
While being restrained by 4) and (15), the subdoor (3) moves to the suspension side while rotating around the upper shaft (8c) and the lower guide roller (9), and at that time, each suspension arm As shown by an arrow (B) in FIG. 9, the suspension shaft (6) is rotated, and in the most opened state, the subdoor (3) is perpendicular to the parent door (2).

なお、この実施例では吊軸(6)により各吊りアームを
親扉(2)に枢止し、このようにすれば組立が容易にな
ると共に上下の吊りアーム(14)、(15)の回動を同期
し得る利点があるが、各吊りアームをそれぞれ別個に親
扉(2)に枢止してもよいことは言うまでもない。
In this embodiment, each suspension arm is pivotally fixed to the parent door (2) by the suspension shaft (6), which facilitates the assembly and the rotation of the upper and lower suspension arms (14) and (15). It goes without saying that each suspension arm may be separately pivoted to the main door (2), with the advantage that the movements can be synchronized.

さらに、この防火避難扉には第2図および第3図に示す
ように、上部のガイドローラ間の軸(8c)に固定された
ギヤ(18)と、それにかみ合うラック(19)と、そのラ
ックと一体のピストン(20)を有する油圧装置(21)を
備え、その油圧装置内にはピストン(20)に戻る力を付
与するばね(22)が設けられる。ローラ間の軸(8c)は
それらローラ(8)の支持部材(23)に固定され、従っ
てギヤ(18)は軸(8c)を介して支持部材(23)に固定
されている。なお、ばね(22)は図示のようにコイルば
ねであってもよいが、所望により板ばねであってもよ
い。
Further, as shown in FIGS. 2 and 3, a gear (18) fixed to the shaft (8c) between the upper guide rollers, a rack (19) meshing with the gear (18) and the rack (19) are attached to the fire escape door. A hydraulic device (21) having a piston (20) integrated with the piston (20) is provided, and a spring (22) for applying a returning force to the piston (20) is provided in the hydraulic device. The shaft (8c) between the rollers is fixed to the supporting member (23) of the rollers (8), and thus the gear (18) is fixed to the supporting member (23) via the shaft (8c). The spring (22) may be a coil spring as shown, but may be a leaf spring if desired.

潜戸(3)が開くと、回動しながら吊り側に移動するの
で、その回動した角度だけギヤ(18)も回動し、従って
ラック(19)を介してピストン(20)をばね(22)の弾
力に抗して変位する。従って、潜戸を解放すると、ばね
(22)の力でピストン(20)は戻る力を受け、そのため
ラック(19)とギヤ(18)を介して潜戸は閉じる向きの
トルクを受ける。このように潜戸(3)は自閉力を付与
され、且つピストン(20)の急激な動きは油圧によって
阻止されるので、潜戸の急激な開閉が阻止される。な
お、ばね(22)を油圧装置(21)内に収めればコンパク
トになると共に、潜戸(3)に常に安定した自閉力を負
荷し得る利点がある。
When the latent door (3) is opened, it moves to the suspension side while rotating, so that the gear (18) also rotates by the angle of the rotation, and therefore the piston (20) moves the spring (22) through the rack (19). ) Is displaced against the elasticity of. Therefore, when the sub-door is released, the piston (20) receives a returning force due to the force of the spring (22), so that the sub-door receives a closing torque via the rack (19) and the gear (18). In this way, the sub-door (3) is given a self-closing force, and the abrupt movement of the piston (20) is blocked by the hydraulic pressure, so that abrupt opening and closing of the sub-door is blocked. In addition, if the spring (22) is housed in the hydraulic device (21), there is an advantage that it is compact and a stable self-closing force can always be applied to the subdoor (3).

第12図に示すように、火災の際など、排煙機が作動する
と、潜戸(3)に負圧が作用し、ガイドローラ(8)、
(9)を境に吊り側に開放力が、取手(5)の側に閉鎖
力が作用するが、ガイドローラ(8)、(9)がほぼ中
心に在るため、それらの力はほぼつり合い、従って僅か
な力で解放し得るが、不必要な解放を避けるため、第2
図に示すように吊り側の幅寸法(d1)より取手側の幅寸
法(d2)を若干大きくし、閉鎖力を若干大きくするのが
好ましい。
As shown in FIG. 12, when the smoke evacuator operates during a fire or the like, negative pressure acts on the subdoor (3), and the guide rollers (8),
An opening force acts on the suspension side and a closing force acts on the handle (5) side at (9), but since the guide rollers (8) and (9) are almost at the center, these forces are almost balanced. , So it can be released with little force, but to avoid unnecessary release, the second
As shown in the figure, it is preferable to make the width dimension (d2) on the handle side slightly larger than the width dimension (d1) on the suspension side and slightly increase the closing force.

(発明の効果) 上記のように、本発明によれば、排煙機などの作動によ
り負圧が作用しても潜戸の支点となる上下のガイドロー
ラが縦方向の中心線に近くにあるので、負圧による開放
力と閉鎖力が相殺し、僅かな力で開くことができる。そ
して、潜戸は開くと吊り側に移動するので、通るのに充
分な有効幅は容易に確保できる。従って、火災の際に適
切に避難することができ、安全対策上好ましいものにな
っている。さらに、急激な開閉が避けられ、且つ潜戸に
は適切に自閉力が加えられる。
(Effect of the Invention) As described above, according to the present invention, the upper and lower guide rollers serving as the fulcrum of the subdoor are close to the center line in the vertical direction even when a negative pressure is applied by the operation of the smoke exhaustor or the like. , Opening force and closing force due to negative pressure cancel each other out, and it can be opened with a slight force. When the subdoor is opened, it moves to the suspension side, so that an effective width sufficient for passing can be easily secured. Therefore, it is possible to properly evacuate in the event of a fire, which is a preferable safety measure. Further, abrupt opening and closing is avoided, and the closed door is appropriately given a self-closing force.

【図面の簡単な説明】[Brief description of drawings]

第1図は本発明の一例による防火避難扉の潜戸を開いた
状態の斜視図、第2図はその潜戸の背面図、第3図は第
2図の線A−A断面図、第4図はこの防火避難扉の正面
図、第5図はその背面図、第6図は第4図の線B−B断
面図、第7図は第4図の線C−C断面図、第8図は吊り
アームを備えた吊り軸の斜視図、第9図はこの防火避難
扉を部分的に省略した平面図、第10図は第2図のD部の
拡大図、第11図はその部分の平面図、そして第12図は負
圧による作用を示すこの防火避難扉の平面図である。 図中、2……親扉、3……潜戸、6……吊軸、8、9…
…ガイドローラ、10、11、ガイドレール、14、15……吊
りアーム、18……ギヤ、19……ラック、20……ピスト
ン、21……油圧装置、22……ばね、23……ローラ支持部
FIG. 1 is a perspective view of a fireproof evacuation door according to an example of the present invention in a state where a sub-door is opened, FIG. 2 is a rear view of the sub-door, and FIG. 3 is a cross-sectional view taken along the line AA of FIG. Is a front view of this fire escape door, FIG. 5 is its rear view, FIG. 6 is a sectional view taken along the line BB in FIG. 4, FIG. 7 is a sectional view taken along the line CC in FIG. 4, and FIG. Is a perspective view of a suspension shaft equipped with a suspension arm, FIG. 9 is a plan view in which the fire protection evacuation door is partially omitted, FIG. 10 is an enlarged view of part D in FIG. 2, and FIG. A plan view and FIG. 12 are plan views of this fire escape door showing the action of negative pressure. In the figure, 2 ... Parent door, 3 ... Sliding door, 6 ... Suspension shaft, 8, 9 ...
… Guide rollers, 10,11, guide rails, 14,15 …… Suspending arm, 18 …… Gear, 19 …… Rack, 20 …… Piston, 21 …… Hydraulic device, 22 …… Spring, 23 …… Roller support Element

───────────────────────────────────────────────────── フロントページの続き (56)参考文献 実開 昭55−150192(JP,U) 実公 昭37−9687(JP,Y1) 実公 昭58−38859(JP,Y2) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliographic references Sho 55-150192 (JP, U) Real public Sho 37-9687 (JP, Y1) Real public Sho 58-38859 (JP, Y2)

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】親扉および前記親扉に備えられた潜戸から
なる防火避難扉において、前記潜戸は上下一対の吊りア
ームによって前記親扉に装着され、前記一対の吊りアー
ムは一端が前記潜戸の吊り側における前記親扉の部分に
枢止され且つ他端が前記潜戸の吊り側から離れた前記潜
戸の該吊り側に近い位置に枢止され、前記潜戸にはその
縦方向の中心線に近い位置の上下に在ってそれぞれ前記
親扉側のガイドレールに係合するガイドローラが備えら
れ、前記潜戸の開閉速度を調整し且つ自閉力を付与する
ため上部または下部の前記ガイドローラは2つのローラ
からなり、前記2つのローラ間においてそれらのローラ
の支持部材に固定されたギヤと、前記ギヤにかみ合い且
つ前記潜戸に可動に備えられたラックと、前記ラックに
連結されたピストンを有する油圧装置と、前記ピストン
に戻る力を加えるばねが備えられていることを特徴とす
る防火避難扉。
1. A fireproof evacuation door comprising a main door and a subdoor provided in the main door, wherein the subdoor is attached to the main door by a pair of upper and lower suspension arms, and one end of the pair of suspension arms is connected to the main door. It is pivotally fixed to the portion of the parent door on the hanging side and the other end is pivotally fixed to a position near the hanging side of the subdoor away from the hanging side of the subdoor, and is close to the longitudinal centerline of the subdoor. Guide rollers that are above and below the position and that engage with the guide rails on the parent door side are provided, and the upper or lower guide rollers are 2 in order to adjust the opening / closing speed of the sub-door and to apply a self-closing force. A gear that is composed of two rollers and is fixed to a supporting member of the rollers between the two rollers; a rack that meshes with the gear and is movably provided on the sub-door; and a pistol that is connected to the rack. Fire evacuation door for a hydraulic device, characterized in that the spring applying a force to return to the piston is provided with.
【請求項2】各前記吊りアームの一端は前記親扉に回動
自在に設置された吊軸に固定されている特許請求の範囲
第1項記載の防火避難扉。
2. The fire-prevention evacuation door according to claim 1, wherein one end of each suspension arm is fixed to a suspension shaft rotatably installed on the main door.
【請求項3】前記上下に配置されたガイドローラは排煙
機の作動により前記潜戸が負圧を受けた際に開放力より
閉鎖力の方が若干大きくなるように縦方向の中心線より
若干ずれた位置に在る特許請求の範囲第1項記載の防火
避難扉。
3. The guide rollers arranged above and below the vertical center line so that the closing force is slightly larger than the opening force when the latent door receives a negative pressure due to the operation of the smoke evacuator. The fire prevention evacuation door according to claim 1, which is located at a shifted position.
JP61042185A 1986-02-27 1986-02-27 Fire escape door Expired - Fee Related JPH0759869B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61042185A JPH0759869B2 (en) 1986-02-27 1986-02-27 Fire escape door

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61042185A JPH0759869B2 (en) 1986-02-27 1986-02-27 Fire escape door

Publications (2)

Publication Number Publication Date
JPS62202190A JPS62202190A (en) 1987-09-05
JPH0759869B2 true JPH0759869B2 (en) 1995-06-28

Family

ID=12628944

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61042185A Expired - Fee Related JPH0759869B2 (en) 1986-02-27 1986-02-27 Fire escape door

Country Status (1)

Country Link
JP (1) JPH0759869B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013118922A1 (en) * 2012-02-10 2013-08-15 鐵矢工業株式会社 Gate device with pressure difference mitigating mechanism

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110259353B (en) * 2019-07-25 2020-01-14 北京鸿恒基幕墙装饰工程有限公司 Fireproof external sunshade integrated window

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55150192U (en) * 1979-04-16 1980-10-29
JPS5838859U (en) * 1981-09-03 1983-03-14 株式会社クボタ turning work vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013118922A1 (en) * 2012-02-10 2013-08-15 鐵矢工業株式会社 Gate device with pressure difference mitigating mechanism
JP2013177803A (en) * 2012-02-10 2013-09-09 Tetsuya Kogyo Kk Door device with differential pressure relaxation mechanism

Also Published As

Publication number Publication date
JPS62202190A (en) 1987-09-05

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